deps: update dependency com.google.cloud:google-cloud-nio to v0.126.18 (#6060)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-nio](https://togithub.com/googleapis/java-storage-nio) | `0.126.17` -> `0.126.18` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-nio/0.126.18/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-nio/0.126.18/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-nio/0.126.18/compatibility-slim/0.126.17)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-nio/0.126.18/confidence-slim/0.126.17)](https://docs.renovatebot.com/merge-confidence/) |

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### ⚠ Dependency Lookup Warnings ⚠

Warnings were logged while processing this repo. Please check the Dependency Dashboard for more information.

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### Release Notes

<details>
<summary>googleapis/java-storage-nio</summary>

### [`v0.126.18`](https://togithub.com/googleapis/java-storage-nio/blob/HEAD/CHANGELOG.md#&#8203;012618-httpsgithubcomgoogleapisjava-storage-niocomparev012617v012618-2023-06-22)

[Compare Source](https://togithub.com/googleapis/java-storage-nio/compare/v0.126.17...v0.126.18)

##### Dependencies

-   Update dependency com.google.apis:google-api-services-storage to v1-rev20230617-2.0.0 ([#&#8203;1202](https://togithub.com/googleapis/java-storage-nio/issues/1202)) ([9f7b1bb](https://togithub.com/googleapis/java-storage-nio/commit/9f7b1bba58f63cdfc42f42b1f219f65dbcc8d310))
-   Update dependency com.google.cloud:google-cloud-storage to v2.22.5 ([#&#8203;1205](https://togithub.com/googleapis/java-storage-nio/issues/1205)) ([4127953](https://togithub.com/googleapis/java-storage-nio/commit/412795338eda33cccddd71620cd94894e6fd0b5a))

</details>

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Author: renovate-bot

google-cloud-bom/pom.xml

@@ -219,7 +219,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-nio</artifactId>
-        <version>0.126.17</version>
+        <version>0.126.18</version>
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>